Algodoo

1. Load shell from magazine on left into gun on right if breach is open (Grab and pull black knob if it isn't)
2. Aim with lazer sights
3. Fire lower and upper chamber with enter and \ respectively.
4. repeat steps 1-3 if shell(s) ejected fine. Otherwise pull on black handle and remove shells.

I haven't had any problems with the shell blowing throught the barrel except when i was messing around with the spring strengths and bullet weights.
Type 1 flak shells have shrapnel only
Type 2 flak shells have denser ejection cloud. (same load but with burning peices flying through the air.)

To set timer on flak shells just highlight them halfway between the tip and 3-4 of the casing. Then go to joints and select the speed you want it to go at. The faster the joint moves the faster that the shell will go off. And the slower you set it the slower that the shell will detonate. Usefull for blowing things up that are far away.